Shine-Co E12 to E26/E27 Adapters Converts Standard Screw-in Bulb Socket 3 Packs Made of high-quality thermoplastic polymer (PBT) and copper, high temperature resistant, corrosion resistant and anti-burning. Easy to install without tools, just twist into existing socket. Fits for all standard bulbs Maximum Voltage: 120V with LED and CFL (Energy Efficient) bulbs. Ideal for ceiling fans or lights with candelabra sockets that need to be converted to a standard medium base. Enlarge your chandelier socket to fit standard bulbs.